α-Casozepine is a bioactive peptide derived from the α protein S1 casein in milk and has an affinity for γ-aminobutyric acid (GABA) receptors in the brain. α-Casozepine has anti-anxiety effects.
References:
[1]. Miclo L, et al. Characterization of alpha-casozepine, a tryptic peptide from bovine alpha(s1)-casein with benzodiazepine-like activity. FASEB J. 2001 Aug;15(10):1780-2.
[2]. Landsberg G, et al Therapeutic effects of an alpha-casozepine and L-tryptophan supplemented diet on fear and anxiety in the cat. J Feline Med Surg. 2017 Jun;19(6):594-602.